Designation: D 6690 – 01

Standard Specification for

Joint and Crack Sealants, Hot Applied, for Concrete and
Asphalt Pavements1
This standard is issued under the fixed designation D 6690; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

pavements against the infiltration of moisture and foreign
material throughout repeated cycles of expansion and contraction with temperature changes, and that will not, at ambient
temperatures, flow from the joint or be picked up by vehicle
tires. The material shall be capable of being brought to a
uniform pouring consistency suitable for completely filling the
joints without inclusion of large air holes or discontinuities and
without damage to the material. It shall remain relatively
unchanged in application characteristics for at least 6 h at the
recommended application temperature in the field.

1. Scope
1.1 This specification covers joint and crack sealants of the
hot applied type intended for use in sealing joints and cracks in
Portland Cement Concrete and Asphaltic Concrete Pavements.
1.2 The values stated in SI units are the standard.
1.3 This standard does not purport to cover the properties
required of sealants for use in areas of Portland Cement
concrete or asphaltic pavement subject to jet fuel or other fuel
spillage such as vehicle and/or aircraft refuel and maintenance
areas.
1.4 This standard does not purport to address all of the

safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use.

4. Classification
4.1 Type I—A joint and crack sealant capable of maintaining an effective seal in moderate climates. The material is
tested for low temperature performance at -18°C using 50 %
extension (formerly Specification D 1190).
4.2 Type II—A joint and crack sealant capable of maintaining an effective seal in most climates. Material is tested for low
temperature performance at -29°C using 50 % extension (formerly Specification D 3405).
4.3 Type III—A joint and crack sealant capable of maintaining an effective seal in most climates. Material is tested for low
temperature performance at -29°C using 50 % extension.
Special tests are included (formerly Federal Spec SS-S1401C).
4.4 Type IV—A joint and crack sealant capable of maintaining an effective seal in climates experiencing very cold
temperatures. Material is tested for low temperature performance at -29°C using 200 % extension.

2. Referenced Documents
2.1 ASTM Standards:
D 1190 Specification for Concrete Joint Sealer, HotApplied Elastic Type2
D 3405 Specification for Joint Sealants, Hot-Applied, for
Concrete and Asphalt Pavements2
D 5167 Practice for Melting of Hot-Applied Joint and
Crack sealant and Filler for Evaluation2
D 5249 Specification for Backer Material for use with Cold
and Hot-Applied Joint Sealants in Portland Cement Concrete and Asphalt Joints2
D 5329 Test Methods for Sealants and Fillers, Hot-Applied
for Joints and Cracks in Asphaltic and Portland Cement
Concrete Pavements2
2.2 Federal Specification:3
SS-S-1410C


NOTE 1—It is the responsibility of the user agency to determine which
type is most applicable to their conditions.

5. Physical Requirements
5.1 Maximum Heating Temperature—The maximum heating temperature is the highest temperature to which a sealant
can be heated, and still conform to all the requirements
specified herein. For purposes of testing as specified hereinafter, the application temperature shall be the same as the
maximum heating temperature. The maximum heating temperature shall be set forth by the manufacturer, shall be shown
on all containers and shall be provided to the testing agency
before any laboratory tests are begun.

3. General Requirements
3.1 The sealant shall be composed of a mixture of materials
that will form a resilient and adhesive compound capable of
effectively sealing joints and cracks in concrete and asphaltic

1
This specification is under the jurisdiction of ASTM Committee D04 on Road
and Paving Materials and is the direct responsibility of Subcommittee D04.33 on
Formed In-Place Sealants for Joints and Cracks in Pavements.
Current edition approved June 10, 2001. Published August 2001.
2
Annual Book of ASTM Standards, Vol 04.03.
3
Available from U.S. Government Printing Office, Washington, DC 20402.

Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.

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D 6690
Method D 5329 prior to beginning any testing.
7.2 Cone Penetration—Determine cone penetration according to Method D 5329 for Cone Penetration, non-immersed.
7.3 Flow—Determine the flow according to Method D 5329
for Flow. Test the specimen for 5 h.
7.4 Bond, Non-Immersed—Determine the bond according
to Test Method D 5329 for Bond, non-immersed.
7.4.1 After final scrubbing and blotting specified in test
Method D 5329, air dry the blocks on their 12.7 mm 3 25.4
mm ends at standard laboratory conditions for 1 h 6 10 min.
prior to pouring bond specimens.
7.4.2 Immediately after conditioning the blocks as in 7.4.1,
assemble the blocks with spacers as specified in test Method
D 5329 so the opening between the blocks will form a cured
sealant block that is 25.4 mm 6 0.1 mm wide for Type I and
12.7 6 0.1 mm wide for Type II , Type III and Type IV.
7.4.3 After pouring material into the block opening, condition the specimen as in 7.1. After conditioning, remove spacers
and trim off excess material with a hot knife being careful not
to pull sealant from the block. Condition the test specimens not
less than 4 h at the temperature specified in Table 1 for the
Specific Type of Sealant. Immediately extend the specimen to
the prescribed percentage in Table 1 using the apparatus and
rate described in D 5329.
7.4.4 Re-compress and re-extend according to test Method
D 5329 for the total number of cycles prescribed in Table 1.
The required cycles shall be completed within a 5 day period
from the time of pouring for Type II, III, and IV, and a 7 day
period for Type I.
7.5 Bond, Water Immersed, Type III Only—Determine the

Bond according to ASTM D 5329. Prepare the specimens as in
section 7.4 except after conditioning, immerse in water for 96
hours as described in D 5329. Testing shall be completed in 5
days from removal from the water for Types III.
7.6 Resilience—Use test Method D 5329 for Resilience.
7.7 Oven Aged Resilience—Age specimen @ 70°C for 168
h. Use test method D 5329.
7.8 Asphalt Compatibility—Test asphalt compatibility according to test Method D 5329.

5.2 The sealant shall conform to the requirements prescribed in Table 1.
6. Sampling and Heating
6.1 Sampling:
6.1.1 Samples may be taken at the plant or warehouse prior
to delivery or at the time of delivery, at the option of the
purchaser. If sampling is done prior to shipment, the inspector
representing the purchaser shall have free access to the material
to be sampled. The inspector shall be afforded all reasonable
facilities for inspection and sampling which shall be conducted
so as not to interfere unnecessarily with the operation of the
works.
6.1.2 Samples shall consist of one of the manufacturer’s
original sealed containers selected at random from the lot or
batch of finished material. A batch or lot shall be considered as
all finished material that was manufactured simultaneously or
continuously as a unit between the time of compounding and
the time of packaging or placing in shipping containers.
6.1.3 Obtain the sealant portion for testing from the selected
manufacturer’s original sealed container in accordance with
Practice D 5167. The sample portion added to and heated in the
melter shall weigh 800 6 50 g for Types I, II, IV, and 1600 6

50 g for Type III. Both pots of the melter described in Practice
D 5167 shall be used for Type III.
6.2 Heating—Heat the material in accordance with Practice
D 5167.
6.2.1 The oil bath in the melter shall be heated to a
temperature between the sealant’s maximum heating temperature and 42°C above the sealant’s maximum heating temperature. (Never allow the oil temperature to exceed 288°C). Add
the sealant to the melter according to the instructions in
Practice D 5167. After the sample has been added to the melter,
regulate the oil temperature within the listed temperature limits
while raising the sealant’s temperature to manufacturer’s
recommended maximum heating temperature within the required 1 hour of time, as stated in Practice D 5167. Immediately upon reaching the maximum heating temperature, pour
samples for testing, except for Type III which shall be heated
for 3 h from the time of first addition to the melter.

8. Packaging and Marking
8.1 The sealing compound shall be delivered in the manufacturer’s original containers. Each container shall be legibly

7. Test Methods
7.1 Specimen Conditioning—Condition all specimens at
standard laboratory conditions for 24 6 4 h as specified in test

TABLE 1
Cone Penetration
at 25°C

Type I
90 max.

Type II
90 max.


Type III
90 max.

Type IV
90-150

Flow at 60°C, mm
Bond, non-immersed

Bond, water immersed

5.0 max.
Two out of three 25.4 mm
specimens passA 5 cycles
at 50 % ext. at -18°C
--

3.0 max.
Three 12.7 mm Specimens
passA 3 cycles at 50 %
ext. at -29°C
--

3.0 max.
Three 12.7 mm Specimens
passA 3 cycles at 200 %
ext. at -29°C
--


Resilience, %
Oven Aged Resilience,%
Asphalt Compatibility

--PassB

60 min.
-PassB

3.0 max.
Three 12.7 mm Specimens
passA 3 cycles at 50 %
ext. at -29°C
Three 12.7 mm specimens
passA 3 cycles at 50 %
ext. at -29°C
60 min.
60 min.
PassB

60 min.
-PassB

A
The development at any time during the test procedure of a crack, separation, or other opening that at any point is over 6 mm deep, in the sealant or between the
sealant and concrete block shall constitute failure of the test specimen. The depth of the crack, separation or other opening shall be measured perpendicular to the side
of the sealant showing the defect.
B
There shall be no failure in adhesion, formation of an oily exudate at the interface between the sealant and asphaltic concrete or other deleterious effects on the
asphaltic concrete or sealant when tested at 60°C.


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D 6690
marked with the name of the manufacturer, the trade name of
the sealant, the manufacturer’s batch, or lot number and
specification number and type, the minimum application temperature and the maximum heating temperature. The maximum
heating temperature must be at least 11°C (20°F) higher than

the minimum application temperature.
9. Keywords
9.1 hot applied; joint sealant

APPENDIX
(Nonmandatory Information)
X1.

material covered by this specification should be dry, clean of
all scale, dirt, dust, curing compound, and other foreign matter.
The sidewalls of the joint space to be sealed should then be
thoroughly sandblasted, blown clean of loose sand by highpressure air, and sealed by use of the melter-applicator described in X1.1.

X1.1 Some if not all, materials conforming to this specification may be damaged by heating to too high a temperature,
reheating, or by heating for too long a time. Care should be
exercised to secure equipment for heating and application that
is suitable for the purpose and approved by the manufacturer of
the material. The material should be heated in a kettle or melter
constructed as a double boiler, with the space between the inner
and outer shells filled with oil or other heat transfer medium.

Thermostatic control for the heat transfer medium shall be
provided and shall have sufficient sensitivity to maintain
sealant temperature within the manufacturer’s specified application temperature range. Temperature indicating devices shall
have intervals no greater than 5°F (2.8°C) and shall be
calibrated as required to assure accuracy. The melter shall have
a continuous sealant agitation and mixing system to provide
uniform viscosity and temperature of material being applied. If
equipped with an application system to deliver sealant to the
pavement, the melter shall incorporate a recirculation pump or
other means of maintaining sealant temperature in the delivery
system. Sealant that has been damaged due to overheating,
reheating or prolonged heating may experience poor adhesion,
softening or bleeding, difficult application, or jelling in the
melter. Direct heating must not be used. As a means of
ascertaining whether or not the material covered by this
specification is being or has been damaged in the field as a
result of overheating, reheating, or prolonged heating, flow
panel specimens may be prepared periodically by drawing off
sealant directly from the melter-applicator during sealing
operations and then tested for flow according to the methods of
testing materials covered by this specification. Flow in excess
of 3.0 mm for Type II, III, and IV, and 5.0 mm for Type I would
indicate damage to material caused by improper heating
procedures.

X1.3 When material covered by this specification is used
for maintenance or resealing of joints that have contained
either similar or dissimilar sealing material, it is recommended
that the joint be dry, cleaned thoroughly with a plow, router,
wire brush, concrete saw, or other suitable tool or tools

designed for the purpose of neatly cleaning pavement joints.
Loose material should be blown out. The sidewalls of the joint
space to be sealed should be thoroughly sandblasted, blown
free of loose sand with high-pressure air and then sealed with
material by use of the melter-applicator described in X1.1.
X1.4 The use of a backer material or bond breaker in the
bottom of the joint to be filled with material covered by this
specification is recommended to control the depth of the
sealant and achieve the desired shape factor, and to support the
sealant against indentation and sag. Backup materials and bond
breakers should be compatible with the material. Due to the
elevated temperatures of application of material covered by
this specification, care should be exercised in the selection of
the suitable backer materials. Refer to Specification D 5249 for
recommended backer materials.
X1.5 Care should be practiced in the application of material
covered by this specification to avoid overfilling of the joint
space. Joints should be filled in a neat workmanlike manner
from 1⁄8 to 1⁄4 in. (3 to 6 mm) below the adjacent pavement
surface.

X1.2 Pavement joints in new construction for application of

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